Hi!
I started testing sound transmission to a smartphone using BlueVoice and noticed sound distortion.
When recording speech, there are distortions, but they are not very noticeable. To check, I placed a speaker near the microphone and connected it to a signal generator at a frequency of 1.2kHz (sine).
Distortions have become clearly visible.
For comparison, I recorded on a computer microphone, there is no distortion. All audio files are attached.
I checked it on the standard firmware ST BlueNRG-LP_LPS DK 1.2.0 - BLE_SensorDemo_BlueMSapp.
OS: Android 10, App: ST BLE Sensor v. 4.14.7
Please tell me how to solve this problem?
Problem with audio processing or BlueVoice transmission?
Thank you.
P.S.
A problem has been noticed that when sound is output through smartphone speakers or headphones, severe distortion occurs.
There are no such distortions on the sound recording.
Voice test BlueVoice:
BlueVoice 1.2 kHz:
PC_Mic 1.2 kHz (Normal):
